Which of the following pairs is/are tautomers of each other?
A
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B
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C
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D
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Solution
The correct options are A C D
Tautomers are structural isomers (constitutional isomers) of chemical compounds that readily interconvert. This interconversion commonly results in the relocation of a proton. The pair shown above are functional isomers and not tautomers. They don't interconvert. The rest examples are all pairs of tautomers.